CN103317094A - Molding method of three-layer-annular-wall two-layer-blade swirler precise casting - Google Patents
Molding method of three-layer-annular-wall two-layer-blade swirler precise casting Download PDFInfo
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- CN103317094A CN103317094A CN2013102236457A CN201310223645A CN103317094A CN 103317094 A CN103317094 A CN 103317094A CN 2013102236457 A CN2013102236457 A CN 2013102236457A CN 201310223645 A CN201310223645 A CN 201310223645A CN 103317094 A CN103317094 A CN 103317094A
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Abstract
The invention relates to a molding method of a three-layer-annular-wall two-layer-blade swirler precise casting. The method is characterized in that the requirements of the molding method of the three-layer-annular-wall two-layer-blade swirler precise casting are that: a wax mold of the precise casting is prepared through a ring-in-ring forming method wherein a larger and a smaller ceramic molding cores are coated between an inner-layer wax mold and an outer-layer wax mold; blade through holes used for forming blades are provided on the periphery of the ceramic mold cores; a key-shaped boss is designed on the end face of the molding core; positioning is carried out in a key-shaped positioning recess provided on the wax mold, such that positions and angles of two layers of blades can be controlled. With the method, the molding of the three-layer-annular-wall two-layer-blade swirler precise casting is realized. According to the invention, with the ring-in-ring wax mold forming method wherein the larger and the smaller ceramic molding cores are coated between the inner-layer wax mold and the outer-layer wax mold, a blank in molding technology of a multilayer-annular-wall multi-blade swirler precise casting is filled up, and swirler precise casting small-batch production is realized. Also, great economic benefit is provided.
Description
Technical field
The present invention relates to be mainly used in the smart type casting moulding technical field of various aero-engines and the complicated swirler class of gas turbine precision castings, the forming method of the two-layer blade vortex device of a kind of shellring wall precision castings is provided especially.
Background technology
The structure of traditional swirler is relatively simple, is comprised of distribution-layer blade between the two-layer ring wall, and the slit is relatively large between the ring wall, between the blade, can paint case making and ask shell, therefore, in the essence casting is produced, generally can manufacture and design unitary mould, suppress complete wax-pattern, carry out paint case making.But exist between the endless belt, paint case making difficulty between the blade, and shell is because thin thickness, drying is not thorough, and intensity is low, the runout phenomenon often occurs, causes foundry goods to scrap in batch.The swirler size of this project is little, thin-walled hollow, complex structure, by interior, in, outer three layers of special-shaped ring wall form, and both can't manufacture and design unitary mould, again can't paint case making and clear shell, therefore, must explore new swirler forming technique.
People urgently wish to obtain the forming method of the good two-layer blade vortex device of the shellring wall precision castings of a kind of technique effect.
Summary of the invention
The forming method that the purpose of this invention is to provide the good two-layer blade vortex device of the shellring wall precision castings of a kind of technique effect.
The invention provides the forming method of the two-layer blade vortex device of a kind of shellring wall precision castings, it is characterized in that: the requirement of the forming method of the two-layer blade vortex device of described shellring wall precision castings is: in the two-layer blade vortex device of shellring wall precision castings is adopted, parcel is large in the middle of the outer wax-pattern, the manufacturing process that little two ceramic cores connect with one another closely is made wax-pattern (seeing Fig. 2), circumferentially offer the blade through hole on the ceramic core for the shaping of blade, and at core end face design key shape boss, in the key shape location grain that Wax mold is offered, locate, be used for controlling position and the angle of two-layer blade; Realize the shaping of the two-layer blade vortex device of shellring wall precision castings with above method, development and production go out qualified swirler precision castings.
In the forming method of the two-layer blade vortex device of described shellring wall precision castings, large and small two ceramic cores of parcel satisfy following requirement in the middle of the inside and outside layer wax-pattern: large ceramic core is used for being shaped between swirler outer shroud inwall and the ring outer wall; Little ceramic core is used for being shaped between swirler ring inwall and the endocyclic outer wall;
Circumferentially offer the blade through hole on the ceramic core for the shaping of inside and outside two-layer blade, and designed key shape boss with 1 ° of gradient at two core end faces: large core key shape convex director 17mm, the high 8mm of wide 6mm, the boss edge is apart from centre distance 19mm, and all fillets of falling R1.6 in edge; Little core key shape convex director 9.5mm, the high 8mm of wide 2mm, the boss edge is apart from centre distance 10mm, and along the week fillet of falling R0.5 (seeing Fig. 3,4,5,6), two core positioning boss positions become 180 °, one large effect of key shape boss is for locating in the key shape locating slot of offering at correspondence position on the wax-pattern profile mould, controlling position and the angle of two-layer blade;
The boss fracture that is stressed when preventing from suppressing wax-pattern, along Zhou Liuyou 0.1mm gap, 0.5mm～1mm gap (seeing Fig. 7) left in the bottom between profile locating slot and core positioning boss;
Another effect of key shape boss is to guarantee core locating in shell, wax-pattern is in paint case making, dewaxing, roasting, carrying and alloy casting metal spare process, core is located in shell by key shape boss, play and twisting do not occur in the core position, water outpour metalwork after, by taking certain way that two cores are removed, namely obtain complete swirler foundry goods; Therefore, designed and made two cover ceramic core moulds, a cover profile mould;
The two-layer blade vortex device of described shellring wall is the thin-walled hollow structure, and blade only has 1.5rnm thick, during the compacting wax-pattern, the die mould parameter is little, then produces and presses not enough defective, and the die mould parameter is large, core easy fracture then, therefore, the compacting parameter of wax-pattern satisfies following requirement: mould material temperature degree: 65 ℃～75 ℃; Pressure Casting: 0.10MPa～0.30MPa; Dwell time 10s～30s;
Adopt directed vacuum pouring during cast swirler foundry goods; The shell preheat temperature: 1050 ℃ ± 10 ℃, temperature retention time was greater than 1 hour; 1570 ± 10 ℃ of alloy refining temperatures, refining time: 2min～3min; 1520 ℃ ± 10 ℃ of pouring temperatures; Poring rate: 3s～5s.
By adopting above method to realize the shaping of the two-layer blade vortex device of shellring wall precision castings, development and production go out qualified swirler precision castings.
The present invention is by having adopted the method for wrapping up the manufacturing process manufacturing wax-pattern of large and small two ceramic core-ring sets, one ring in the middle of the inside and outside layer wax-pattern, the forming technique of having filled up multilayer ring wall multiple-blade swirler precision castings is blank, has realized the small serial production of swirler precision castings.Created than the large economy benefit.
Description of drawings
The present invention is further detailed explanation below in conjunction with drawings and the embodiments:
Fig. 1 is the two-layer blade vortex device of shellring wall structural representation sketch;
Fig. 2 is swirler wax-pattern structural representation sketch;
Fig. 3 is the front view of one of swirler ceramic core structure diagram;
Fig. 4 is the top view corresponding with Fig. 3;
Fig. 5 is two front view of swirler ceramic core structure diagram;
Fig. 6 is the top view corresponding with Fig. 5;
Fig. 7 is that the swirler ceramic core is located schematic diagram in exterior mold.
The specific embodiment
Swirler precision castings (referring to the version of multilayer ring wall multiple layers of vanes among Fig. 1), its size is little; thin-walled hollow, complex structure, by interior, in, outer three layers of special-shaped ring wall form, and between every two-layer ring wall along 12 vanelets of abnormity that evenly distribute in week; two-layer blade with radially become 45 ℃ of opposite cuticles; maximum gauge only has 45mm, highly be 35mm, during blade reaches, the external annulus pachydermia is 1.5mm; between the ring wall, the blade gap is narrow, can't carry out paint case making and shell clearly.Therefore cast shape to the essence of this part and brought unprecedented difficulty.
The forming method of the two-layer blade vortex device of a kind of shellring wall precision castings, its requirement is: wrap up the manufacturing process manufacturing wax-pattern (seeing Fig. 2) that large and small two ceramic cores connect with one another closely in the middle of the two-layer blade vortex device of shellring wall precision castings is adopted inside and outside layer wax-pattern, circumferentially offer the blade through hole on the ceramic core for the shaping of blade, and at core end face design key shape boss, in the key shape location grain that Wax mold is offered, locate, be used for controlling position and the angle of two-layer blade; Realize the shaping of the two-layer blade vortex device of shellring wall precision castings with above method, development and production go out qualified swirler precision castings.
In the forming method of the two-layer blade vortex device of described shellring wall precision castings, large and small two ceramic cores of parcel satisfy following requirement in the middle of the inside and outside layer wax-pattern: large ceramic core is used for being shaped between swirler outer shroud inwall and the ring outer wall; Little ceramic core is used for being shaped between swirler ring inwall and the endocyclic outer wall;
Circumferentially offer the blade through hole on the ceramic core for the shaping of inside and outside two-layer blade, and designed key shape boss with 1 ° of gradient at two core end faces: large core key shape convex director 17mm, the high 8mm of wide 6mm, the boss edge is apart from centre distance 19mm, and all fillets of falling R1.6 in edge; Little core key shape convex director 9.5mm, the high 8mm of wide 2mm, the boss edge is apart from centre distance 10mm, and along the week fillet of falling R0.5 (seeing Fig. 3,4,5,6), two core positioning boss positions become 180 °, one large effect of key shape boss is for locating in the key shape locating slot of offering at correspondence position on the wax-pattern profile mould, controlling position and the angle of two-layer blade;
The boss fracture that is stressed when preventing from suppressing wax-pattern, along Zhou Liuyou 0.1mm gap, 0.5mm～1mm gap (seeing Fig. 7) left in the bottom between profile locating slot and core positioning boss;
Another effect of key shape boss is to guarantee core locating in shell, wax-pattern is in paint case making, dewaxing, roasting, carrying and alloy casting metal spare process, core is located in shell by key shape boss, play and twisting do not occur in the core position, water outpour metalwork after, by taking certain way that two cores are removed, namely obtain complete swirler foundry goods; Therefore, designed and made two cover ceramic core moulds, a cover profile mould;
The two-layer blade vortex device of described shellring wall is the thin-walled hollow structure, and blade only has 1.5rnm thick, during the compacting wax-pattern, the die mould parameter is little, then produces and presses not enough defective, and the die mould parameter is large, core easy fracture then, therefore, the compacting parameter of wax-pattern satisfies following requirement: mould material temperature degree: 65 ℃～75 ℃; Pressure Casting: 0.10MPa～0.30MPa; Dwell time 10s～30s;
Adopt directed vacuum pouring during cast swirler foundry goods; The shell preheat temperature: 1050 ℃ ± 10 ℃, temperature retention time was greater than 1 hour; 1570 ± 10 ℃ of alloy refining temperatures, refining time: 2min～3min; 1520 ℃ ± 10 ℃ of pouring temperatures; Poring rate: 3s～5s.
By adopting above method to realize the shaping of the two-layer blade vortex device of shellring wall precision castings, development and production go out qualified swirler precision castings.
The present embodiment is by having adopted the method for wrapping up the manufacturing process manufacturing wax-pattern of large and small two ceramic core-ring sets, one ring in the middle of the inside and outside layer wax-pattern, the forming technique of having filled up multilayer ring wall multiple-blade swirler precision castings is blank, has realized the small serial production of swirler precision castings.Created than the large economy benefit.
Claims (2)
1. the forming method of the two-layer blade vortex device of a shellring wall precision castings, it is characterized in that: the requirement of the forming method of the two-layer blade vortex device of described shellring wall precision castings is: wrap up the manufacturing process manufacturing wax-pattern that large and small two ceramic cores connect with one another closely in the middle of the two-layer blade vortex device of shellring wall precision castings is adopted inside and outside layer wax-pattern, circumferentially offer the blade through hole on the ceramic core for the shaping of blade, and at core end face design key shape boss, in the key shape location grain that Wax mold is offered, locate, be used for controlling position and the angle of two-layer blade; Realize the shaping of the two-layer blade vortex device of shellring wall precision castings with above method.
2. according to the forming method of the two-layer blade vortex device of the described shellring wall of claim 1 precision castings, it is characterized in that: in the forming method of the two-layer blade vortex device of described shellring wall precision castings, large and small two ceramic cores of parcel satisfy following requirement in the middle of the inside and outside layer wax-pattern: large ceramic core is used for being shaped between swirler outer shroud inwall and the ring outer wall; Little ceramic core is used for being shaped between swirler ring inwall and the endocyclic outer wall;
Designed key shape boss with 1 ° of gradient at two core end faces: large core key shape convex director 17mm, the high 8mm of wide 6mm, the boss edge is apart from centre distance 19mm, and along the week fillet of falling R1.6; Little core key shape convex director 9.5mm, the high 8mm of wide 2mm, the boss edge is apart from centre distance 10mm, and along the week fillet of falling R0.5, two core positioning boss positions become 180 °;
The boss fracture that is stressed when preventing from suppressing wax-pattern, along Zhou Liuyou 0.1mm gap, 0.5mm～1mm gap is left in the bottom between profile locating slot and core positioning boss;
Another effect of key shape boss is to guarantee core locating in shell, wax-pattern is in paint case making, dewaxing, roasting, carrying and alloy casting metal spare process, core is located in shell by key shape boss, play and twisting do not occur in the core position, water outpour metalwork after, two cores are removed, namely obtain complete swirler foundry goods;
The compacting parameter of wax-pattern satisfies following requirement: mould material temperature degree: 65 ℃～75 ℃; Pressure Casting: 0.10MPa～0.30MPa; Dwell time 10s～30s;
Adopt directed vacuum pouring during cast swirler foundry goods; The shell preheat temperature: 1050 ℃ ± 10 ℃, temperature retention time was greater than 1 hour; 1570 ± 10 ℃ of alloy refining temperatures, refining time: 2min～3min; 1520 ℃ ± 10 ℃ of pouring temperatures; Poring rate: 3s～5s.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894553A (en) * | 2014-02-28 | 2014-07-02 | 浙江科尔泵业股份有限公司 | Integral impeller casting process of narrow-sprue centrifugal pump and impeller mould case |
| CN105215276A (en) * | 2015-10-30 | 2016-01-06 | 鹰普（中国）有限公司 | A kind of ceramic core investment casting method |
| CN107297453A (en) * | 2017-05-10 | 2017-10-27 | 株洲中航动力精密铸造有限公司 | Method for manufacturing wax membrane for shrouded centrifugal impellor |
| CN111036847A (en) * | 2019-12-27 | 2020-04-21 | 安徽应流航源动力科技有限公司 | Method for preventing core deviation of directional blade of heavy gas turbine |
| CN112387927A (en) * | 2020-10-29 | 2021-02-23 | 中国航发南方工业有限公司 | Forming die of annular inner cavity part wax mould |
| CN113976833A (en) * | 2021-10-21 | 2022-01-28 | 中国航发沈阳黎明航空发动机有限责任公司 | Method for improving positioning precision of ceramic core for large thin-wall part |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1031391A1 (en) * | 1999-02-22 | 2000-08-30 | Howmet Research Corporation | Anti-swirl mold pour cup and casting method |
| JP2007007664A (en) * | 2005-06-28 | 2007-01-18 | Hitachi Metal Precision:Kk | Swirler for gas turbine combustor and producing method thereof |
| CN102239316A (en) * | 2008-12-11 | 2011-11-09 | 博格华纳公司 | Simplified variable geometry turbocharger with vane rings |
| CN102400087A (en) * | 2010-09-08 | 2012-04-04 | 沈阳黎明航空发动机(集团)有限责任公司 | Preparation method for blade ceramic core precision casting equipment |
| CN202951844U (en) * | 2012-10-30 | 2013-05-29 | 霍山县东风铸造有限公司 | Impeller casting sand mold |
-
2013
- 2013-06-06 CN CN201310223645.7A patent/CN103317094B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1031391A1 (en) * | 1999-02-22 | 2000-08-30 | Howmet Research Corporation | Anti-swirl mold pour cup and casting method |
| JP2007007664A (en) * | 2005-06-28 | 2007-01-18 | Hitachi Metal Precision:Kk | Swirler for gas turbine combustor and producing method thereof |
| CN102239316A (en) * | 2008-12-11 | 2011-11-09 | 博格华纳公司 | Simplified variable geometry turbocharger with vane rings |
| CN102400087A (en) * | 2010-09-08 | 2012-04-04 | 沈阳黎明航空发动机(集团)有限责任公司 | Preparation method for blade ceramic core precision casting equipment |
| CN202951844U (en) * | 2012-10-30 | 2013-05-29 | 霍山县东风铸造有限公司 | Impeller casting sand mold |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894553A (en) * | 2014-02-28 | 2014-07-02 | 浙江科尔泵业股份有限公司 | Integral impeller casting process of narrow-sprue centrifugal pump and impeller mould case |
| CN103894553B (en) * | 2014-02-28 | 2016-01-13 | 浙江科尔泵业股份有限公司 | The impeller integral casting process of narrow runner centrifugal pump and impeller formwork thereof |
| CN105215276A (en) * | 2015-10-30 | 2016-01-06 | 鹰普（中国）有限公司 | A kind of ceramic core investment casting method |
| CN107297453A (en) * | 2017-05-10 | 2017-10-27 | 株洲中航动力精密铸造有限公司 | Method for manufacturing wax membrane for shrouded centrifugal impellor |
| CN107297453B (en) * | 2017-05-10 | 2020-07-21 | 中国航发南方工业有限公司 | Wax mould manufacturing method for closed centrifugal impeller |
| CN111036847A (en) * | 2019-12-27 | 2020-04-21 | 安徽应流航源动力科技有限公司 | Method for preventing core deviation of directional blade of heavy gas turbine |
| CN112387927A (en) * | 2020-10-29 | 2021-02-23 | 中国航发南方工业有限公司 | Forming die of annular inner cavity part wax mould |
| CN113976833A (en) * | 2021-10-21 | 2022-01-28 | 中国航发沈阳黎明航空发动机有限责任公司 | Method for improving positioning precision of ceramic core for large thin-wall part |
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Effective date of registration: 20160929 Address after: 110043 Liaoning Province, Shenyang City District East Street No. six Patentee after: Shenyang AVIC Dynamic Precision Casting Technology Co., Ltd. Address before: 110043 Liaoning Province, Shenyang City District East Street No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
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Address after: 110000 No. 6 Dongta Street, Dadong District, Shenyang City, Liaoning Province Patentee after: Shenyang Hangfa Precision Casting Co., Ltd. Address before: 110043 Liaoning Province, Shenyang City District East Street No. six Patentee before: Shenyang AVIC Dynamic Precision Casting Technology Co., Ltd. |
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Effective date of registration: 20190826 Address after: 110043 Liaoning Province, Shenyang City District East Street No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110000 No. 6 Dongta Street, Dadong District, Shenyang City, Liaoning Province Patentee before: Shenyang Hangfa Precision Casting Co., Ltd. |
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